I have my E52 from yesterday
at home I have WiFi router SMC for my notebooks and I have on router only one security rule for access
it is filtering MAC address
I added there WLAN (MAC) address of my E52 - got it from sticker on box and by using some code on my phone
phone now shows me this WLAN and when I click "open browser with this WLAN" then after 30 secs it shows me warning "no feedback from this gate" (I hope I translate it right to english)
I had similar problem with my E52 and wireless at home (TP-LINK), but I have hidden SSID, MAC filtering and WPA2-TKIP.
Anyway, if I remember correctly, my steps to get the connection working were
1) remove the setting for the WLAN in E52
2) redefine everything necessary in the router, i.e MAC address etc. (btw you can also check the MAC address on the sticker under your battery
3) reboot the router
4) access the WLAN on the phone
I suppose you have tried this already, but one never knows
Would like to repeat these steps, but unfortunately my E52 gave up on me completely thus I am unable to test it again
I reseted SMC router, I checked 10 times MAC address and it did not work...
I also turned OFF MAC filtering and even now E52 showed me same error...
I deleted all interet settings and let E52 to find WLAN and to start from zero
after 30 sec message "no any feedback from gate (port)"
when I buy anything I always have some troubles...